The Fold-out Valentines sub-subseries consists of 33 cards that feature some sort of interactive component. This may include flaps that open to reveal hidden messages, or pop-up cards that can be folded out to make a free-standing three-dimensional image.

The Handmade Valentines sub-subseries is comprised of 131 cards using a variety of craft materials.The Handmade Valentines sub-subseries consists of cards that have been collaged together by someone and include hand-finished details. They are typically made with a melange of lace-paper, embossed paper, cut-out pictures and paper shapes. They might be finished with a hand-written or printed message and might be hand-drawn or at least assembled by hand. The materials used in these handmade valentines are diverse and can include metal trinkets, ribbon, satin, fabrics, artificial or dried flowers, beads, feathers and wire.

Sub-subseries contains the protocols of study completed that where used by Dr. Thomas Cherian and Manuel Scarowsky during their work for the Duke project. Divided in 8 sections following the division made by the researchers. The documents are in alphabetical order. Includes protocols forms.

Consists of successful membership proposal applications from the 1990s.

The sub-subseries consists of twenty miscellaneous geological maps, charts, and plans of Egypt, Sinai Peninsula, Rome, Manitoba, British Columbia, Northwest Territories, Newfoundland, New Brunswick, the eastern part of British North America, Snake River, Montana, Wyoming, Wisconsin, St. Lawrence River, Cumberland Coal Field, North Pole, and Pictou Harbour. Maps are both printed and hand-drawn.

Consists of successful membership proposal applications from the 2000s.

The Manufactured Cards sub-subseries 33 consists of Valentines that have been cut and printed by machine. They are typically a single-fold card or may be printed on a single piece of cardstock. These cards have no evidence of human manipulation in its manufacturing and are typically one-dimensional.

The Ephemera sub-subseries consists of miscellaneous, non-greeting card items, composed of 5 printed documents and 1 physical object. In it are writers, small pamphlets destined to provide the reader with tips on how to write letters and messages to all sorts of people, as well as greeting card catalogs and press. There is also a wall pocket, presumably used to hold cards, that was equally being sold by wholesalers of greeting cards.

Consists of successful membership proposal applications from the 2010s.

The Miscellaneous Greeting Cards sub-subseries contains all cards that are not Valentines. They were either found within the same seller’s scrapbooks as the Valentine cards or were found mixed with the fonds, possibly belonging to a same recipient as the some of the Valentine cards. The other greeting cards take various forms and shapes and typically commemorate an important life event.